From 49109af1bf9e3a3c3c5c11fd89eb1e3e005b0532 Mon Sep 17 00:00:00 2001
From: Stewart Allen <sa@grid.space>
Date: Tue, 29 Jun 2021 17:23:54 -0400
Subject: [PATCH] fix macro interior/exterior last check

---
 src/mode/fdm/export.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mode/fdm/export.js b/src/mode/fdm/export.js
index fc535569..0f70eda2 100644
--- a/src/mode/fdm/export.js
+++ b/src/mode/fdm/export.js
@@ -450,7 +450,7 @@
                 speedMMM = (out.speed || process.outputFeedrate) * 60; // range
 
                 // emit gcode macro for changed print region
-                if (out.type !== last.type) {
+                if (last && out.type !== last.type) {
                     switch (out.type) {
                         case 'ext':
                             appendAllSub(gcodeExt);